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PETER W. EEINsHAGEN, oE CINCINNATI, onto, AssIeNoE To HIMsELE- AND JOHN H. BUcKMAN.

Letters Patent No. 104,884, lated June 28, 1870.

IMPROVEMENT IN SHAFT-COUPLING.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, PETER W, REINSHAGEN, of Cincinnati, Hamilton county, State of Ohio, have invented certain new and useful Improvements in Shaft- Coupliugs; and I hereby declare the following to be a sufficiently full, cli-ur, an`d exact' description thereof to enable one skilled in the art to which myinvention appertains to make and use it, reference being had to the accompanyingdrawing making part of this specitication. f

This invention i'ielutes to a mode of coupling hollow shafts; and l My improvement consists in stiffeniug the ends of such shafts before the conplingis secured in place, and

locking them together by means of a short solid shaft.

fitting such ends, as will be`more fully explained hereinafter.

In the accompanying drawing Figure l is an axial section of the coupling and hollow shafts, embodying my invention.

Figure 2 represents in perspective the parts of my coupling, as used for hollow shafts, detached.

Figure 3 is a cross-section of the. coupling in connection with a hollow shaft.l

A is a compression-sleeve, of a double conical form exteriorly, as shown, and split at a at one place only, and that the entire length of the sleeve. It is bored tosnngly fit the shafts it is designed to couple, and, when compressed in the manner hereinafter described, to tightly enclasp the shafts throughout the entire length of the sleeve.

' Rings B B are provided to fit over the ends of the sleeve A, being bored conical 'to tit snugly the conical exterior of the sleeve. j

The coupling is attached by slipping the sleeve A over the junction of the shafts to be coupled, and by simply driving on the rings B B with the common hammer, or othcrwise,'the sleeve can be so tightly shrunk around the shaft that, in most cases, the additonal secnrityof a key or Apins is unnecessary.

ends of the shafts before the exterior coupling is secured in place.

The ends of the shafts C C' are notched at the junction in the form of a letter L, or T, if preferred.

A short shaft, D, is fitted into the ends of the shafts C C snugly, provided with a key-seat, d, wl1ich,for convenience of manufacture, is cut the entire length of the shaft.

A key, E, which -is made of a length equal to the depth of thelnotches c c' together, is fitted into the key-seat el and notches c c', for the purpose of lpreventing either end ofthe shafts from revolving in the.' coupling. The shafts arc at the same time prevented from drawing apart by the provision ofthe pins d', which lock wit-hin the inner legs of the notches c c.

When a coupling for the exterior of the shafts, .such as is herein described, is used in connection with the,- interior devices described, the shafts are so-irmly coupled that displacement or"\vorking loose is impossible, and the coupling is readily detachablewhen necessary.

I claim herein as new and of my invention-` In connection with the notched shaft ends C O' c c', the key-seated shafnD d, provided with projecting pins zZ cZ, and loose key or feather E, constructed and combined substantially iu the manner and for the purpose described.

In testimony of which invention, I'heleunto set my hand.-

` PETER W. REINSHAGEN.

Witnesses:

FRANK MLLLWARD, I. L. WARTMANN. 

